there are many distracters which puts a burden on the small unit combat leaders and actually creates an environment because of their living conditions that is not conducive to readiness. >> reporter: others claim women suffer more combat casualties than illnesses and pregnancy is an issue. to senator john mccain, it's equal standards for certain demanding jobs. >> i think women are obviously -- are prepared to serve side by side with men in combat. i just want to emphasize, though, there should be the same physical and mental standards for anyone to perform certain roles and functions in the military. >> reporter: many say it's a question of equal rights and serving in combat allows a soldier to advance through the ranks, farther and faster. >> the bottom line is we need to treat people like individuals. what are the capabilities they bring to the fight, including physical strength, plus courage, plus aptitude, plus leadership and all the things we need for the most effective fighting force. >> reporter: military service chiefs have until may 15 to make their case about which jobs if any should sti